Door-lock.



No. 804,399. PATENTBD NOV. 14, 1905. J. C. HARDENBBRGH. DOOR LOCK.

APPLICATION FILED MAR.30. 1905.

2 SHEETS-SHEET l.

WJ TNESSES; f

PATENTED NOV. 14, 1905.

J. G. HARDBNBERGH.

DOOR LUK.

PPLIOATION HLBD mman. 1905.

2 SHEETS-SHEET 2.

JOHN C. HARDENBERGH, OF CLEVELAND, OHIO.

DOOR-LOCK.

Specification of Letters Patent.

Patented Nov. 14, 1905.

Application iiled March-30, 1905. Serial No. 252,832.

This invention is a combined door lock and latch having key mechanism inone of the knobs.

It is characterized particularly by a clutch, one member of whichoperates the latch-bolt and the other member of which is carried by theoutside knob, and the knob-spindle maybe moved lengthwise to engage ordisengage the clutch. Key-operated means are provided to turn thespindle from the outside when the clutch is disengaged. On the insidemeans are provided to lock the clutch at disengagement.

The invention is illustrated in the accompanying drawings.

Figure 1 is an edge view of a door with the lock in elevation. Fig. 2 isa vertical section with the clutch engaged. Fig. 3 is a vertical sectionwith the clutch disengaged. Fig. 4 is a section on the line 4 4 of Figs.2 and 3. Fig. 5 is a section on the line 5 5 of Figs. 2 and 3. Figs. 6and `7 are details in elevation showing the latch on the inside of thedoor which holds the clutch in or out of engagement. Fig. 8 is ahorizontal section through the edge of the door, showing the latch inplan.

' Fig. 9 is a plan of the key.

squared portion of the knob-spindle and turnsA therewith. The member 11carries the lugs 12, which operate the latch-bolt 13.

14 indicates a circumferential rib on the spindle between the squaredportion 8 and the round portion 10, and the sleeve 9 abuts against thisshoulder, so that it may be moved lengthwise with the knob-spindle toengage or disengage the clutch members.

At the outer end beyond the round portion 10 the knob-spindle has areduced squared portion 15, over which is sleeved a nipple 16 of acircular lock-casing 17. The nipple is fast on the squared portion 15.This casing is rotatable in the knob, or, rather, the knob is rotatableupon the casing; but when the casing is turned it also turns theknob-spindle by means of the squared connection between 15 and 16. Theknob and casing have a keykole at 18 to receive the key 19, which has abit 20, adapted to project through a notch at 21 in the inner wall ofthe casing and into a notch at 22 in the outer end of the clutch member9, thereby locking the knob and casing together, so that when the knobis turned the casing and spindle will also be turned. The keyhole 18 isstaggered with respect to the notch 21, so that when the key is insertedit must rst be turned in the casing before its bit can enter the notch.

The face-plates upon the inside and outside of the door are indicated,respectively, at 23 and 24, and the latter has a tubular portion 25, inwhich the outer clutch member 9 turns. The shank 26 of the inside knobhas therein a groove 27 to receive the forked end of a sliding latch 28,normally pressed down by a' spring 29. This latch-piece slides in guidesin the face-plate 23 and acts to hold the clutch members 9 and 11 in orout of engagement.

When used as an ordinary latch, the inside knob is pulled out, as shownin Fig. 2, with the latch 28 engaging behind the rib 30 on the shank ofthe inside knob. This draws the member 9 inwardly and holds the clutchmembers together, so that when either knob is turned the latch will beoperated. When used as a lock, the latch 28 is lifted and the insideknob is pushed 4in a suflicient distance to disengage the clutch member9 fromthe member 11. If then the outside knob be turned, it will simplyrotate the clutch member 9 upon the round portion 10 of the spindlewithout operating the door-latch; but if the key 19 be inserted asdescribed the casing 17 and knob will be `locked together and the casingwill turn with the knob, which motion, by means of the squared portionat 15, will be communicated to the knob-spindle, and thus to thedoor-latch.

What I claim as new, and desire to secure by Letters Patent, is- Y 1. Ina combined latch and lock, the combination of a bolt-actuating spindlehaving one knob fast and another rotatable thereon, the spindle havingthereon one clutch member and the loose knob having another clutchmember also rotatable on the spindle, the spindle and knobs beingslidable lengthwise to engage or disengage said clutch members,

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and key-operated means to look the loose knob and the spindle togetherWhen the clutch is disengaged.

2. In a combined door look and latch, in combination, a bolt-actuatingspindle having an inside knob fast thereon and an outside knob rotatablethereon, clutch members Carried by the spindle and loose knobrespectively, the spindle being slidable lengthwise to engage ordisengage the clutch, a latch on the inside of the door engageable withthe spindle to hold the clutch as set, a casing fixed to the spindleWithin the loose knob and on which said knob is rotatable, and means tolock the knob and casing together.

In testimony WhereofI have signed my name to this specieation in thepresence of two subscribing Witnesses.

JOHN C. HARDENBERGH.

Witnesses:

JOHN A. BOMMHARDT, LOTTIE NEWBURN.

